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Show HN: I 3D scanned the interior of the Great Pyramid at Giza

giza.mused.org

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Re: Show HN: I 3D scanned the interior of the Great Pyramid at Giza

#81

Post by lukehollis »

green-eclipse wrote: post #26

This is amazing! Incredible work! Thank you for doing this project. FYI I found a typo - the word "cuts": > It's 750 by 750 feet at the base and is made of over 2 million large, limestone blocks cuts from the surrounding area. Also - from one of the angles shown, it looks like there's a golf course next to the pyramids? Not at all what I expected!

Thanks! And haha yes, definitely visit Giza someday--it's an incredible place to work.

Re: Show HN: I 3D scanned the interior of the Great Pyramid at Giza

#82

Post by LeifCarrotson »

anshumankmr wrote: post #54
klausjensen wrote: post #49

Earlier quoted context omitted.

I bet it's the aliens' server-room.

Is there any non invasive way to see the interior of the chamber? I hope we are aren't gonna leave it be.

To whom do you refer to with "we"?

I hope we leave it be until we develop the tech to measure it non-invasively.

The tech available to Napoleon's Egyptologists or the British in the 1800s would not have allowed him to do it. They would have picked up anything they could carry and brought it back to Room 4 in the British Museum. Our tech in 2022 does not currently allow us to see the interior of the chamber more precisely than "there's a void there."

It's likely to not have been breached for millenia, it would be positively criminal to drill to it.

I say wait a couple hundred years until some future archaeologist will have a neutrino or muon scanner with sufficient resolution to read the hieroglyphics. It'll keep.

Re: Show HN: I 3D scanned the interior of the Great Pyramid at Giza

#84

Post by 0_____0 »

bambax wrote: post #25
joshvm wrote: post #17

Earlier quoted context omitted.

I've used the BLK 360 before so some comment here. Essentially you scan at various points within the volume of interest, e.g. you walk around, place the scanner, scan, repeat. Each scan takes a few minutes at high angular resolution. Leica provides software called Register (or Cyclone) to match the scans together. Because you generally don't have GPS (the BLK doesn't have a GPS onboar and GPS is anyway much more inac…

Complete newbie here, but wouldn't it be possible to affix some marks on the walls to help with the stitching afterwards?

When working with LIDAR scanning systems (Total systems etc) that generate a point cloud, this is exactly what you'd do. Affix a target or fiducial (a pattern you can apply to a surface that shows up in the scan, either because it's very reflective or because it has a high contrast pattern on it), and use those as reference points to stitch your clouds together.

Re: Show HN: I 3D scanned the interior of the Great Pyramid at Giza

#89

Post by nidnogg »

This is very solid work, really exciting to get this perspective. As someone who's never left his home country and is often thinking of deserts every now and then, it's really inspiring stuff to see.

A very slight hiccup - I couldn't find a way to disable the "You're now standing on the blocks [...]" tooltip on Firefox. It's a litle big and immersion breaking - if it'd be shown once that'd be more fitting. While this could be fixed via console, I think it's something to consider.

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